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Palaeohystrichophora dispersa
Palaeohystrichophora "dispersa" Cookson and Eisenack, 1958, p.39, pl.10, figs.12,14. Emendation: Morgan, 1977, p.127, as Diconodinium dispersum.
Originally Palaeohystrichophora, subsequently Diconodinium.
Taxonomic senior synonym: Palaeohystrichophora (as and now Diconodinium) multispina, according to Stover and Helby (1987a, p.103).
Holotype: Cookson and Eisenack, 1958, pl.10, fig.14; Morgan, 1977, pl.1, figs.2a–b.
Age: Albian–Cenomanian.
Original description: Cookson and Eisenack, 1958, p. 39
Theca broadly fusiform, unequally divided by the transverse furrow, the larger "epitheca" being terminated by a short bifid process, the hypotheca by a sharply pointed process. The membrane of the theca is ornamented with rather widely dispersed small spine-like processes with truncate apices.
Dimensions: Type - 80 x 53 µm. Range - 64-90 x 38-62 µm.
Affinities:
Cookson and Eisenack, 1958, p. 39: P. dispersa can by distinguished from P. pellifera by the coarser nature of the spines, their truncate apices and wider dispersal.
Originally Palaeohystrichophora, subsequently Diconodinium.
Taxonomic senior synonym: Palaeohystrichophora (as and now Diconodinium) multispina, according to Stover and Helby (1987a, p.103).
Holotype: Cookson and Eisenack, 1958, pl.10, fig.14; Morgan, 1977, pl.1, figs.2a–b.
Age: Albian–Cenomanian.
Original description: Cookson and Eisenack, 1958, p. 39
Theca broadly fusiform, unequally divided by the transverse furrow, the larger "epitheca" being terminated by a short bifid process, the hypotheca by a sharply pointed process. The membrane of the theca is ornamented with rather widely dispersed small spine-like processes with truncate apices.
Dimensions: Type - 80 x 53 µm. Range - 64-90 x 38-62 µm.
Affinities:
Cookson and Eisenack, 1958, p. 39: P. dispersa can by distinguished from P. pellifera by the coarser nature of the spines, their truncate apices and wider dispersal.